JP5212008B2 - Circulation adapter - Google Patents

Description

  The present invention relates to a circulation adapter used by being attached to a bathtub to supply hot water from a bath water heater to the bathtub, and in particular, a memorial jet spout for ejecting a memorial jet and a bubble jet spout for ejecting a bubble jet. It is related with the circulation adapter provided with.

  Conventionally, a bath water heating system for a bathtub has a hot water operation mode in which new hot water is supplied from the bath water heater, a reheating operation mode in which the hot water in the bathtub is returned to the water heater again, and reheated. A variety of hot water supply modes are available to meet consumer needs such as a bubble operation mode in which bubbles are mixed in hot water and a bubble jet is ejected, and an ultrasonic operation mode in which ultrasonic vibration is applied to the hot water and ejected. ing.

In addition, there is a demand to arbitrarily switch the hot water ejection direction depending on the operation mode used. Japanese Patent Laid-Open No. 2004-228688 provides a jet nozzle attached to a bathtub, that is, a so-called circulation adapter provided with a jet outlet facing the front and a jet outlet facing downward, and a bubble by a manually operable movable member having an opening corresponding to each jet nozzle. A technique that can change the jet direction has been proposed.
In patent document 1, the direction of the jet outlet when it wants to take a bath with a weak jet and when it wants to receive a strong jet directly according to a user's request | requirement can be arbitrarily changed by manual operation.

  As described above, when the direction of the ejection port can be manually operated, the user's request can be satisfied, but on the other hand, there is a problem that it takes time to operate each time the operation mode is switched. Furthermore, when the memorial operation mode is set in a state where the jet direction of the jet is in front, there is a problem that the high-temperature jet flows toward the user.

  Patent Document 2 is a circulation adapter having a bubble jet outlet that faces in a horizontal direction and a memorial jet outlet that faces in a downward direction, and the jet flow path toward both of the outlets is switched by the operation of a shape memory alloy. A switching valve is provided to provide a safety device function that automatically directs the jet flow path to the memorial jet outlet when hot and cold water is hot, and proposes a technology configured to direct the bubble jet outlet at room temperature.

Japanese Patent No. 3003231 JP-A-8-290024

  In general, the bubble jet outlet needs to have a smaller diameter than the memorial jet outlet due to the mechanism. Therefore, in the adapter of Patent Document 2, when the chasing operation is selected, the bubble jet flow channel is selected until the hot water becomes hot and the shape memory alloy is activated. Compared with the case where it is selected, the jet flow rate is reduced, and the memorial time becomes longer. Similarly, when the pouring operation is selected, hot water is supplied from the bubble jet outlet, and hot water supply time is required. Moreover, from the viewpoint of safety, when a safety device is provided in which the bath water heater does not ignite unless a predetermined circulating flow rate is ensured, there is a problem that the bath water heater is not ignited and the hot water temperature cannot be raised.

  It is also conceivable to select all jet flow paths by electric control. If a bath hot-water supply system having all the operation modes is installed and introduced from the beginning, selection control of a jet flow path suitable for a specific circulation adapter can be incorporated as an equipment function. However, if you already have a bath hot water system, if you want to add a predetermined operation mode, it is common to replace only the circulation adapter that has the operation mode function. That is, for the addition of the operation mode, it is not realistic in cost to change all the control systems and electrical wiring.

  An object of the present invention is to provide a circulation adapter capable of switching between the memorial operation mode and the bubble operation mode, and automatically switching between the two operation modes and manually without impairing the safety device function for preventing the high temperature jet from the bubble jet outlet. It is to make switching compatible.

  The circulation adapter according to the present invention includes a memorial jet outlet that ejects a memorial jet in the memorial operation mode, a memorial jet flow passage that communicates with the memorial jet outlet, and a bubble jet in the bubble operation mode. A bubble jet outlet to be ejected; a bubble jet passage communicating with the bubble jet outlet; and a jet flow passage selection means for selectively selecting the memorial jet flow passage and the bubble jet passage. .

  The invention according to claim 1 is characterized in that the jet flow channel selecting means has a temperature sensitive member capable of selectively selecting both jet flow channels according to the jet temperature, and the two jet flow channels can be switched manually. It has the characteristic manual operation member.

  In the first aspect of the invention, since the jet flow path is selected by the temperature sensitive member capable of detecting the jet temperature, the operation mode can be automatically switched without any operation by the user, and the jet flow path selection and the hot water temperature can be selected. Detection can be performed with a single member. Moreover, since it has a manual operation member, the jet flow path of each operation mode can be switched by manual operation.

  The invention according to claim 2 is the invention according to claim 1, wherein the jet flow channel selecting means has a valve body attached to one end side of a valve shaft operatively connected to the temperature sensitive member, The manual operation member is moved in the surface direction orthogonal to the valve shaft, and the valve shaft is moved. Along with the movement of the valve shaft, the valve body is selected as a bubble jet flow path and a memorial jet flow. It is configured to be switchable over a second position for selecting a flow path.

  According to a third aspect of the present invention, in the second aspect of the present invention, the manual operation member includes a bearing member fixed to the other end side of the valve shaft, a sliding contact with the bearing member, and the valve shaft. And a sliding member having an inclined portion inclined with respect to the orthogonal surface, and the bearing member is configured to be movable back and forth in the valve shaft direction by movement of the sliding member.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the manual operation member is provided with an arcuate groove portion that is formed in an arc shape around the bubble jet outlet and guides the movement of the sliding member. Has an operation portion capable of manually operating the sliding member.

  According to a fifth aspect of the invention, in the invention of the third or fourth aspect, an engaging portion is formed on the sliding member, and the engaging portion of the sliding member can be engaged with the sliding member. An engaged portion that is positioned at a first operation position for moving the bearing member so that the valve body is in the first position and a second operation position for moving the bearing member so that the valve body is in the second position. It forms in the circulation adapter main body side wall part, It is characterized by the above-mentioned.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the height of the inclined portion at the first operation position from the wall portion is a height from the wall portion of the inclined portion at the second operation position. And the temperature sensitive member switches the valve body to the second position at a predetermined temperature or higher.

  According to the first aspect of the present invention, it is possible to achieve both automatic switching and manual switching of both operation modes without impairing the safety device function for preventing a high-temperature jet from the bubble jet outlet. In other words, since the jet flow channel in the operation mode can be switched manually, it is possible to select a jet flow channel that matches the user's request, and automatically using a temperature sensitive member that can select the jet flow channel based on the actual hot water temperature. Since the jet flow path is switched, the safety device function for high-temperature hot water can be maintained. In addition, since the jet flow channel selection and the hot water temperature detection are performed by the temperature sensitive member that is the same member, it is possible to improve the response to hot water temperature and reduce the number of members.

  According to the invention of claim 2, the operating direction of the valve shaft and the valve body of the jet flow channel selecting means can be made different from the operating direction of the manual operation member, so that compactness can be achieved. Further, since the manual operation member is an operation in a surface direction orthogonal to the valve shaft, the operability is excellent.

  According to the invention of claim 3, the operation direction of the valve shaft and the valve body of the jet flow channel selecting means and the operation direction of the manual operation member can be made different with a simple configuration using the bearing portion of the valve shaft. Furthermore, it becomes possible to operate continuously from the first position to the second position.

  According to invention of Claim 4, since the movement of a sliding member can be guided using the circumference | surroundings of a bubble jet nozzle, compactification and designability can be made compatible.

  According to the invention of claim 5, the sliding member can position the bearing member at the position where the valve body is at the first position or the second position, and the sliding member can be set with the feeling of operation without visual inspection. It becomes.

  According to the invention of claim 6, even if the sliding member is in the first operation position, the valve shaft and the valve body select the second position, that is, the memorial jet flow channel, by the operation of the temperature sensitive member. Can operate the safety device function.

  Hereinafter, the best mode for carrying out the present invention will be described based on examples.

  As shown in FIG. 1, the bath supply system of the embodiment includes a bathtub 1, a bath water heater 2, a circulation circuit 3, and a circulation adapter 4. The bath water heater 2 includes a first heat supply unit 5 for hot water supply composed of a combustion unit for gas and the like, a heat exchange unit, a second heat supply unit 6 for bath bathing, and a pump 7 for circulating water and hot water. Each device is controlled by a controller 8.

  In addition, the controller 8 is electrically connected to the operation panel 9, and the user presses a push button provided for each operation mode installed on the operation panel 9, so that a hot water bath instruction and various modes are provided. The selection signal is transmitted to the controller 8 and the operation of the bath water heater 2 is started.

  A water and hot water distribution circuit related to the first heat supply unit 5 for hot water supply will be described. The water introduced into the introduction path 10 is supplied to the first heat supply unit 5 through the first flow sensor 11 and is supplied to the bathtub 1 and other hot water supply system devices through the discharge path 12.

  A circulation circuit of water and hot water related to the second heat supply unit 6 for bath remedy will be described. The circulation circuit 3 includes a return path 13 and a forward path 14. The hot water of the bathtub 1 sucked from the circulation adapter 4 by the operation of the pump 7 is heated by the second heat supply unit 6 through the return path 13 and is supplied to the bathtub 1 from the circulation adapter 4 through the forward path 14. . A second flow rate sensor 15 is provided in the return path 13 downstream of the pump 7, and the heating operation of the second heat supply unit 6 is not performed unless there is a flow rate of 3.5 L / min or more from the viewpoint of safety. The discharge path 12 and the return path 13 are connected by a branch discharge path 16, and the communication is controlled by an electromagnetic valve 17.

Next, the circulation adapter 4 will be described with reference to FIGS.
2 is a front view of the circulation adapter 4, FIG. 3 is a side view of the circulation adapter 4 seen from the left, FIG. 4 is a sectional view taken along line IV-IV in FIG. 2, FIG. 5 is a sectional view taken along line VV in FIG. Shows a cross-sectional view taken along line VI-VI in FIG.

  The circulation adapter 4 is a first tubular body 18 disposed outside the bathtub 1 and a first tubular body 18 which is disposed through the bathtub wall from the inner side of the bathtub 1 and is screwed into the first tubular body 18. It has two cylindrical bodies 19. The first and second cylindrical bodies 18 and 19 have a first flange portion 18a and a second flange portion 19a, respectively, and the sealing properties between the bathtub wall and the flange portions 18a and 19a are secured by the annular packings 20 and 21. doing.

  A switching valve case 23 fixed to the second flange portion 19a by a bolt 22 is disposed on the inner peripheral side of the second cylindrical body 19, and a bubble jet opening horizontally on the surface of the switching valve case 23 A jet port 24 and a suction port 25 are provided, and a side hole-shaped memorial jet jet port 26 described later is formed in the tank bottom direction. An outer cover member 27 is attached to the bathtub-side surface portion of the circulation adapter 4 so as to cover the second flange portion 19 a and the switching valve case 23.

  The end wall portion 28 of the first cylindrical body 18 is formed with three port portions of a suction pipe 29, a discharge pipe 30 and an intake pipe 31. The suction pipe 29 is a forward path 14, and the discharge pipe 30 is a return path 13. Are connected to each other. The intake pipe 31 is connected to an intake unit (not shown) having a filter, an orifice, a check valve and the like via an intake pipe.

  The switching valve case 23 includes an outer cylinder part 32 fitted to the inner peripheral surface of the second cylindrical body 19 and an inner cylinder part 33 that forms a plurality of functional spaces in cooperation with the outer cylinder part 32. In other words, the outer cylindrical portion 32 and the inner cylindrical portion 33 have a cylindrical swirl chamber 34 provided with a bubble jet outlet 24 and a suction chamber 35 provided with a suction port 25 inside the switching valve case 23, which will be described later. As described above, the swirl reserve chamber 37 that is provided in parallel with the swirl chamber 34 and connected by the communication path 36, the supply chamber 38 that is provided in parallel with the swirl reserve chamber 37 and that can communicate with the memorial jet outlet 26, and the swirl reserve There are five functional spaces of a suction chamber 39 arranged in series on the side opposite to the bathtub with respect to the chamber 37 and the supply chamber 38.

  The swirl chamber 34 is provided with an intake nozzle 40 having a conical shape at the end on the bathtub side. An intake hole 41 that communicates with the intake pipe 31 is provided inside the intake nozzle 40, and the air introduced from the intake hole 41 is directed toward a communication passage opening 42 provided at a central portion in the longitudinal direction of the swirl chamber 34. Configured to supply.

  As shown in FIG. 6, the communication path 36 communicates with the cylindrical swirl chamber 34 so that the connection direction is a tangential direction. With this configuration, hot water introduced from the swirl preliminary chamber 37 swirls at a high speed along the inner peripheral shape of the swirl chamber 34, and is suitable for air suction, bubble miniaturization, generation of ultrasonic waves of a predetermined frequency, and the like. Swivel rotation speed can be obtained. The circulation adapter 4 is configured to have a rotational speed of 30,000 to 40,000 revolutions / minute. A check valve (not shown) is installed in the swirl preliminary chamber 37 on the upstream side of the communication passage opening 42, and only the flow of hot water from the suction chamber 39 is allowed.

  As shown in FIGS. 5 and 6, the switching valve case 23 penetrates the inner cylinder portion 33, and the outlet switching is performed to switch the hot water outlet to the bubble jet outlet 24 and the memorial jet outlet 26. A member 43 is provided. The spout switching member 43 is attached to a valve shaft 45 that is slidably supported by a receiving portion 44 formed in the inner cylinder portion 33 at the center portion, and a countertub-side end portion that is one end side of the valve shaft 45. The first switching valve 46, the second switching valve 47 installed on the other end side across the first switching valve 46 and the receiving portion 44, the bathtub side end of the valve shaft 45 that is the other end side from the second switching valve 47. It comprises a hemispherical bearing member 48 fixed to the part.

  The first switching valve 46 includes a blocking portion 49 that controls the communication state between the swirling preliminary chamber 37 and the suction chamber 39, and a communication portion that is provided in parallel with the blocking portion 49 and that allows the suction chamber 39 and the supply chamber 38 to always communicate with each other. And 50. The second switching valve 47 communicates with the supply chamber 38 and is formed in the inner cylindrical portion 33 and can open and close the first concave portion 51 having a smaller diameter than the second switching valve 47 and having a cylindrical shape. A second recess 52 having a larger diameter than the first recess 51 is integrally formed on the bathtub side of the first recess 51. The valve shaft 45 includes a first support portion 53 and a second support portion 54 formed on the suction chamber 39 side.

  A bias spring 57 is disposed between the first receiving seat 55 and the first supporting portion 53 provided in the receiving portion 44, and the second supporting portion 54 and the second receiving seat 56 fixed to the inner cylinder portion 33 are arranged. A shape memory alloy spring 58 (temperature sensitive member) is disposed between them. The tension between the bias spring 57 and the shape memory alloy spring 58 is balanced, and the position of the outlet switching member 43, that is, the state of the so-called first switching valve 46 and second switching valve 47 is the shape memory alloy spring. As long as the tension of 58 does not change, it does not change. The positional relationship between the first switching valve 46 and the second switching valve 47 is such that when the second switching valve 47 closes the first recess 51, the blocking portion 49 of the first switching valve 46 opens (first Position), conversely, the second switching valve 47 is configured to open (second position) when the blocking portion 49 closes the swivel reserve chamber 37.

  More specifically, when the hot and cold water is at a low temperature or normal temperature, the shape memory alloy spring 58 is in a contracted state. At this time, since the second switching valve 47 closes the first recess 51 and the blocking portion 49 is open, hot water is supplied to the swirl chamber 34 via the swirl preliminary chamber 37 and the communication path 36. Next, when high-temperature hot water, for example, 50 ° C. hot water is supplied into the circulation adapter 4, the shape memory alloy spring 58 expands in response to the temperature change, and the bias spring 57 is compressed and the second switching valve is compressed. 47 opens and the shut-off part 49 closes.

  Next, based on FIGS. 7-10, the manual operation member which switches a jet flow path by a user's manual operation is demonstrated. 7 and 9 show a front view of the circulation adapter with the jet guide member 62 removed, FIG. 8 shows a section taken along line VIII-VIII in FIG. 7, and FIG. 10 shows a section taken along line XX in FIG. . On the inner side of the outer cover member 27 and on the end face on the bathtub side of the switching valve case 23, a resin inner cover member 58 constituting the circulation adapter main body side wall is fixed to the switching valve case 23 by the bolts 22.

  As shown in FIG. 7, the inner cover member 58 is formed in a first jet opening 59 provided on the outer periphery of the bubble jet outlet 24, and has a tapered section that expands from the first jet opening 59 toward the bathtub side. A tapered portion 60 having a circular shape when viewed from the front, an arc-shaped groove portion 61 formed along a part of the lower portion of the tapered portion 60, and a first engagement formed at a position above the tapered portion 60 and engageable with the jet guide member 62. A hole 63, a second engagement hole 64 formed at a position below the arc-shaped groove 61 and engageable with the jet guide member 62, and a first protrusion 66 engageable with a sliding member 65 (described later) at a first operation position. The sliding member 65 and the second protrusion 67 that can be engaged at the second operation position are configured. That is, the first protrusion 66 and the second protrusion 67 are integrally formed with the inner cover member 58 that is the circulation adapter main body side wall.

  The arc-shaped groove 61 has a substantially U-shaped cross section composed of a bottom surface 68, an upper wall 69, a lower wall 70, and side walls 71, 72 that are orthogonal to the valve shaft 45 on the opposite bathtub side, that is, substantially parallel to the side wall of the adapter body. A sliding member 65 having a rectangular cross section, which is guided by the bottom 68, the upper wall 69, and the lower wall 70, is slidably accommodated in the recess.

  A substantially central portion of the bottom surface 68 of the arc-shaped groove portion 61 is formed with a through-opening 61a that supports the other end portion of the valve shaft 45 and allows the valve shaft 45 to slidably pass through in the axial direction. The sliding member 65 includes an arcuate through-hole 79 formed in a substantially arc shape that allows the sliding member 65 to pass through the other end portion of the valve shaft 45 so as to be movable in the left-right direction, and the periphery of the arc-shaped through-hole 79. An inclined portion 73 that is slidably contacted with the bearing member 48 and is inclined with respect to a surface orthogonal to the valve shaft 45, that is, a so-called bottom surface 68, and is semicircular in cross section and in contact with the bearing member 48; 65 It comprises from the operation part 74 extended toward the bathtub side at the left end part.

  The inclination part 73 is comprised so that the height from the bottom face 68 with respect to the bathtub side may become high as it goes to the right side. That is, when the operation unit 74 is manually operated to the right end position (first operation position), the sliding member 65 slides to the right in the arc-shaped groove 61, and the bias spring 57 is the shape memory alloy spring 58. When it is stronger than the tension, the bearing member 48 that is in sliding contact with the inclined portion 73 moves along the inclined portion 73 toward the counter-tub. On the other hand, when the operation unit 74 is manually operated to the left end position (second operation position), the sliding member 65 slides to the left in the arc-shaped groove 61, and the bias spring 57 is the shape memory alloy spring 58. When it is stronger than the tension, the bearing member 48 that is in sliding contact with the inclined portion 73 moves along the inclined portion 73 toward the bathtub.

  Therefore, when the bearing member 48 is in sliding contact with the inclined portion 73, the height of the inclined portion 73 from the bottom surface 68 with respect to the bathtub side is set so that the operating portion 74 is positioned at the right end portion position (first operation) as shown in FIG. When the valve shaft 45 is manually operated to the first position (FIG. 6), the second switching valve 47 is closed and the shut-off section 49 is opened. As shown in FIG. When manually operated to the end position (second operation position), the valve shaft 45 is set to the second position where the second switching valve 47 opens and the blocking section 49 closes.

  As shown in FIG. 8, even when the operation unit 74 is manually operated to the right end position (first operation position), when the hot water temperature becomes high, the shape memory alloy spring 58 changes in temperature. Since the bias spring 57 is compressed in response to the compression, the bearing member 48 moves away from the inclined portion 73 and slides toward the bathtub, the second switching valve 47 opens the valve shaft 45, and the blocking portion 49 opens. It is configured to be in the second position where the valve is closed.

  A recess 80 that can be engaged with the first protrusion 66 and the second protrusion 67 is formed on the bottom surface of the operation section 74 on the adapter body side, and the operation section 74 is manually moved to the first operation position or the second operation position. When operated, the first protrusion 66 and the second protrusion 67 are engaged, the sliding member 65 can be positioned, and a predetermined moderation feeling is given to the user.

  The jet guide member 62 is engaged with the second jet opening 75 having the same diameter as the first jet opening 59, the crescent-shaped operation opening 76, and the first engagement hole 63 corresponding to the central portion of the adapter main body side wall. The first engagement portion 77 and the second engagement portion 78 engaged with the second engagement hole 64 are configured. The outer edge side portion of the jet guide member 62 is connected to the inner cover member 58 by a first engaging portion 77 and a second engaging portion 78, and other regions are separated from the inner cover member 58. Due to the space between the operation opening 76 and the outer edge side portion, the flow of hot water can be recirculated from the outside of the jet guide member 62 to the bubble jet outlet 24 in the bubble operation mode.

Next, each operation mode will be described.
The circulation adapter 4 can execute three operation modes: a pouring operation mode, a chasing operation mode, and a bubble operation mode. The user selects one of the operation modes with a push button on the operation panel 9.

(Pouring hot water operation mode)
When the operation unit 74 is operated to a normal, so-called second operation position, and the pouring operation mode is selected on the operation panel 9, the water introduced into the introduction pipe 10 and moved to the first heat supply unit 5 is heated. To the discharge pipe 12. At this time, the solenoid valve 17 is opened by the instruction of the controller 8 so that the hot water is led to the return path 13 via the branch discharge pipe 16 and a part of the hot water is introduced into the circulation adapter 4 from the return path 13. 25. Note that hot water is supplied from the suction port 25 only in the pouring operation mode.

  The remaining hot water is introduced into the suction chamber 39 through the forward path 14. The shape memory alloy spring 58 installed in the suction chamber 39 expands in response to the temperature of the hot water introduced into the suction chamber 39 (for example, 50 ° C.), and the first switching valve 46 moves to the swivel reserve chamber 37. And the second switching valve 47 is opened. After passing hot water through the supply chamber 38, the first concave portion 51 and the second concave portion 52, the hot water is sent to the chasing jet outlet 26 facing downward in the bathtub. Thus, the hot water is poured into the bathtub.

(Mourning mode)
When the operation unit 74 is operated normally and the memorial operation mode is selected on the operation panel 9, the pump 7 and the second heat supply unit 6 start operating according to an instruction from the controller 8, and the hot water in the bathtub is drawn into the suction port 25. To the return path 13. The hot water heated by the second heat supply unit 6 is introduced into the suction chamber 39 through the forward path 14. The path after the suction chamber 39 is the same as in the pouring operation mode. The solenoid valve 17 is inactive, and the connection between the branch discharge pipe 16 and the circulation circuit 3 is cut off.

(Bubble operation mode)
When the operation unit 74 is operated to a bubble, so-called first operation position, and the bubble operation mode is selected on the operation panel 9, the controller 8 operates the pump 7, and hot water in the bathtub is passed from the suction port 25 through the suction chamber 35. Introduce to the return path 13. At this time, the second heat supply unit 6 is not in operation, and hot water circulates at the temperature introduced in the return path 13 and is introduced into the suction chamber 39 through the forward path 14. The shape memory alloy spring 58 installed in the suction chamber 39 is sensitive to this hot water temperature, and when the shape memory alloy spring 58 is extended by the temperature of the remaining hot water, it performs a contraction operation. 2 closes the switching valve 47 and opens the first switching valve 46. When the shape memory alloy spring 58 has already contracted, the state is maintained.

  Hot water entering the swirl preliminary chamber 37 from the suction chamber 39 passes through the communication path 36 and is introduced into the swirl chamber 34 from the communication path opening 42. Since the communication path 36 is connected in the tangential direction of the swirl chamber 34, the hot water swirls around the central axis in the longitudinal direction of the swirl chamber 34, and a predetermined negative pressure is generated in the swirl chamber 34. The air sucked by the negative pressure is sucked into the central portion of the swirl chamber 34 from the intake hole 41, mixed with hot water, and the bubble mixed hot water is ejected from the bubble jet outlet 24 that opens horizontally while swirling.

(Safety device function)
Finally, the safety device function will be described. When the operation unit 74 is operated to a bubble, so-called first operation position, and the memorial operation mode is selected on the operation panel 9, the pump 7 and the second heat supply unit 6 start to operate according to the instruction of the controller 8, and the inside of the bathtub Hot water is introduced into the return path 13 through the suction port 25. The hot water heated by the second heat supply unit 6 is introduced into the suction chamber 39 through the forward path 14.

  Initially, since the bearing member 48 is in sliding contact with the inclined portion 73, the valve shaft 45 is in the first position where the second switching valve 47 is closed and the blocking portion 49 is opened. 58 expands to switch the valve shaft 45 to a second position, that is, a state in which the so-called bearing member 48 and the inclined portion 73 are separated from each other, and hot hot water is guided to the memorial jet outlet 26. Even when the pouring operation mode is selected while the operation unit 74 is operated as a bubble, the shape memory alloy spring 58 expands and the valve shaft 45 is automatically switched to the second position.

Next, a modification in which the above embodiment is partially changed will be described.
1) In the above-described embodiment, an example in which three operation modes can be realized has been described. However, a device having two operation modes of a memorial operation mode and a bubble operation mode, or a device having more operation modes. Also, the circulation adapter of the present invention can be applied.

2) In the above-described embodiment, the example in which the first switching valve and the second switching valve for switching between the memorial jet outlet and the bubble jet outlet are provided on the same axis has been described. The circulation adapter of the present invention can also be applied to what is provided.

3) In the above embodiment, the example in which the circulation adapter main body side wall is used as the inner cover member and the first protrusion and the second protrusion are formed on the inner cover member has been described. The circulation adapter of the present invention can also be applied to a case or an outer cover member.

4) In addition, those skilled in the art can implement the present invention in various forms added with various modifications without departing from the spirit of the present invention, and the present invention includes such modifications. is there.

BRIEF DESCRIPTION OF THE DRAWINGS It is whole explanatory drawing of the bath hot-water supply system of an Example. It is a front view of a circulation adapter. It is a side view of a circulation adapter. It is a figure which shows the IV-IV sectional view in FIG. It is a figure which shows the VV line cross section in FIG. It is a figure which shows the VI-VI line cross section in FIG. The front view of the circulation adapter which removed the jet guide member when carrying out bubble operation of the operation part is shown. It is a figure which shows the VIII-VIII sectional view taken on the line in FIG. The front view of the circulation adapter which removed the jet guide member at the time of carrying out normal operation of the operation part is shown. It is a figure which shows the XX line cross section in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathtub 4 Circulation adapter 24 Bubble jet outlet 25 Suction inlet 26 Remembrance jet outlet 34 Swirling chamber 36 Communication path 37 Swirling spare chamber 38 Supply chamber 43 Outlet switching member 45 Valve shaft 46 1st switching valve 47 2nd switching valve 48 Bearing member 58 Shape memory alloy spring 61 Arc-shaped groove portion 65 Sliding member 73 Inclined portion 74 Operating portion

Claims (6)

A memorial jet outlet that ejects a memorial jet in the memorial operation mode, a memorial jet flow passage that communicates with the memorial jet outlet, a bubble jet outlet that ejects the bubble jet in the bubble operation mode, In a circulation adapter having a bubble jet flow path communicating with the bubble jet outlet, and a jet flow path selection means for selectively selecting the memorial jet flow path and the bubble jet flow path,
The jet flow channel selection means has a temperature sensitive member that can selectively select both jet flow channels according to the jet temperature, and has a manual operation member that can switch both jet flow channels by manual operation. A circulation adapter characterized by.   The jet flow channel selection means has a valve body mounted on one end side of a valve shaft operatively connected to the temperature sensitive member, and operates the manual operation member in a plane direction orthogonal to the valve shaft. As the valve shaft is moved, the valve body can be switched between a first position for selecting a bubble jet flow path and a second position for selecting a memorial jet flow path. The circulation adapter according to claim 1, wherein the circulation adapter is configured.   The manual operation member includes a bearing member fixed to the other end side of the valve shaft, and a sliding member having an inclined portion that is slidable to the bearing member and inclined with respect to a surface orthogonal to the valve shaft. The circulation adapter according to claim 2, wherein the bearing member is configured to be movable back and forth in the valve shaft direction by movement of the sliding member.   An arc-shaped groove portion that is formed in an arc shape around the bubble jet outlet and guides the movement of the sliding member is provided, and the manual operation member has an operation portion capable of manually operating the sliding member. The circulation adapter according to claim 3.   A first engaging portion is formed on the sliding member, and the bearing member is moved so that the sliding member can be engaged with the engaging portion of the sliding member and the valve body is in the first position. 5. The engaged portion for positioning the operation position and the second operation position for moving the bearing member so that the valve body is in the second position is formed on the side wall of the circulation adapter main body. The circulation adapter as described in. A height of the inclined portion of the first operation position from the wall portion is formed lower than a height of the inclined portion of the second operation position from the wall portion, and the temperature sensitive member is equal to or higher than a predetermined temperature. The circulation adapter according to claim 5, wherein the valve body is switched to the second position.